Does every engine that uses gas create green house gases?

Answers

Every engine that burns a hydrocarbon fuel, typically referred to as gas, will emit greenhouse gases. Hydrocarbon fuels include natural gases such as propane, diesel, gasoline, bio-diesel, butane, methane, ethanol, etc. Hydrogen, however, can be burned as a gaseous fuel whose only product of combustion is water. Although water vapor is considered a greenhouse gas in its gaseous state, it is considered to be environmentally neutral, unlike carbon dioxide.